Rotary printing-press.



R. J; GREENWAY, Jn. ROTARY PBINTINQPRLSS. ArrLwATzoI rILpn ooT.' 9., 1'912.

Patented June 16, 1914.

' 2 SHEBTS-SHEET 1.

R. J. GREENWAY, JB. ROTARY PRINTING PRESS. APPLIOATION FILED 00T. 9, 1912.

Patented June 16, 1914.

, 2 BEHETB--SHET 2.

I lvenn ienisiri eisen;

.To @ZZ whom t may conce/m."

lle it known. that L litionreno J, Guinesimy, Jr., e citizen of the United States, enel resident of W sterly, in the county of Viasliington and State of Rhode Island, herve, invented n new' und, useful Improvement in Rotary Printi gf-Presses, of; which the following' is a speeiiieotion.

in rotary printing presses it is veriy dii'- iieult for the pressnion to so accurately locete the Aplate on its cylinder and the impression surface on\ cylinder that there Will loe no (lr-ag of the plete on its impression surface during the printing opel-ation. Many diilerent devices have heen provided in the attempt to overcome this objection mei the object of this present invention to provide e novel devine for transferring the controi of 'the plete cylinder from the impression cylinder gear to the impression surface oi' the impression cylinder during the printing` o) eration so es to prevent any iii-og' of the plete on iis impression surface, the seid (levi-:ce being; wronged to transfer the :yintrolnroni the impression surf-eee imola to the impression cylinder gear zitter the printin nl operation has been eoinpleted, for vbringing the plate cylinder bacli into its proper regis-gi- ?or starting the next sueeeeeling 'print no operation.

My vinvention more particularly consists in forming the teeth of the impression cylinder geur that the above object is obtained in a very siniple manner sind at the se'nie tiriie not interfering with the positive clrive of the impression cylinder gear.

lnitlie accompanying; fiirawi gs., I bfve shown my invention as applied to e rotary multicolor Vprinting' press. f

liignre l is :i detail section through so much of a multicolor printingpress as will `give a clear nntlerstemiing of my invention, 2 is, e detail view slimmingr geared e# 'mention between the impression and plate eylinders and `between the impression cylindei' and its driving ineens; and Fig. 3 is i fragmentary view on 'an enlarged scale for more clearly illustrating the eut-tino' sway of the baelr of the teetli for dioxine; their thickness The impression cylinder is olenoted by l, which cylinder is 'herein shown is havingA tivo impression surfaces 2 'and I3, with two sets o sheet eorrying gripper@ i and Speoeatien o Lettere 'Patent .pp'leziton filed october S, V1912. Serial No.

. by Cutting away the books gradually re ,Patented June if, 1934i www.

ilie plete cylinders are flenoted by 6, i', 8 eno EL anti their plates by l0, 1 1.e l2 and.-

The teeth on the impression cylinder geen 14, are so forrnedptliat the control of each plate oylinefler will be transferred from the impression cylinder .eenito each impression snril'm-,e thereon, during the printing` opem` tion :and hack to the (ler ger after the printing `operation lisis been ccmipletedn This is eccomplished in 'the present instance where two impression surfaces are formed on the impression cylinder7 by gradually di creasingtlie thickness of successive teeth from the point A to the point B :incl from the point C to the point l)7 anni rapidly in.M creasing the thickness of successive teeth from the point B to the point (l und from the point D to the point A. This varying; oi the thicknesg of the teeth is secomplisliei, of the teeth to greater or lesser extent clearly shown in F 3, whereby the positive drivingg` engagement of the fronts of the teeth on the ,freer 19 with the fronts of the teeth on the goor 14, is 1nnintz1ined. This ifrznlnzil reduction in thickness of the teeth :irrsngeiil along the impression surfaces of the impression cylinder and ness of the teeth for bringing' the plete cylinders beek to proper register is orrei'iyfeii alongr the portions of the impression eylinder between its impression surfaces.

By the gradual reduction of the thickness of the teeth on the impression cylinder gear along the impress-ion surface. thereof, l uni enabled 'to transfer the control of lthe plato Cylinder from the impression cylinder geur to the impression surface on the impression cylinder Without any exterior operating de vices and the transfer of the eontrolof the plete cylinder back to the impression cylin- 'der gear :it a kpoint beyond the impression surface on ythe impressioneylinder gear is accomplished without any exterior operating devices. A very simpie ineens is thee pro impression Cylinthe rapid increase 1n thi/ele v der gear being so vided for accomplishing the result above set forth. i:

While I have illustrated this invention in connection With a rotary multicolorl press and in connection with an impression cylinder having tWo impression surfaces, it is to be understood that I do not Wish to limit myself to multicolor rotary presses nor to any particular number of impression surfaces on the impression cylinder, but contemplate the use of the invention in connection with rotary printing presses of any character in which the impression cylinder has any desired number o impression surfaces.

1lVhat I claim is:

l. In a rotaryprinting press, an impression cylinder having a plurality of impression surfaces, its gear, a plate cylinder' and itsgear driven from the impression cylinder gear, the'teeth on the impression cylinformed that the control of therplate ey'linder will be transferred from the impression cylinder gear to the impression surfaces during the printing operations and back to the impression cylinder gear loe- `Ween the printing operations.

2. In a rotary multicolor printing press, an impressionieylinder, its gear, a plurality of plate cylinders and their gears driven from the impression cylinder gear, the teeth en the impression cylinder gear being,r so ornrcd that the control of the plate cylinders/will be transferred from the impression cylinder gear to the impression surface durang-the printing operations and back 'to the impression cylinder gear between the printing operati-ons.

3. In a rotary multicolor printingr press, an impression cylinder having a plurality of impression surfaces. its gear, a plurality 'of plate cylinders and their gears driven from the impression cylinder gear, the teeth on the impression cylinder gear being so formed that the control ot' the plate cylinders will be transferred from the impression cylinder gear to the impression surfaces during the printing rperations and bach to the impression cylinder `gears between the printing operation.`

4. ln a rotary printing press, an impression cylinder, its gear. a plate cylinder and its gear, the teeth on the impression cylinder gear decreasing in thickness along the im pression surface of the cylinder and increasinit;r in thickness beyond said impression surface for transferring the Control of the plate cylinder from the impression cylinder gear to the impression surface during the printing operation and back to the impression cylinder gear a ltcr the printing operation.

5. ln a rotary printingy press, an impression cylinder.y its gear. a plate cylinder and its gear. the teeth on the impression cylinder gear gradually decreasing in thickness alon,r

l i i l l l l l i i l the impression surface rapidly increasing` in th impression surface ior transferring; the mintrol of the plate cylinder troni the inlinesion cylinder gear to the .said impression sur-- 'face during,T the printing operation and lulclc to the impresion cylinder gear ai'iler the printing opera tion.

l. ln ay rotary printing ijiress, an iini'n'ession cylinder having` a plurality ol impression surfaces, itsgear, a plate cylinder and its gear, the teeth on the impression cylinder gear decreasing in thicln'iess along` lhe impression. sur lfaces and increasina` in thickness between said imprr'fon surfaces for transferring the control ot the plate cylinder from the impression cylinder `gear lo the, said impression surfaces during the printing operation and bach to the inipres sion cylinder gear between the ijirinting ot' the cylinder and operations.

7. lu a rotary printing; press, au nnpression cyliude" having; u plurality of iinpression surfaces, ilsgear. u plate linder and its gear, the teeth ot the impief-ision c if'linder gear gradually decriuisiiui thickness along the impression surfaces and rapidly increasing in thielincss between to the impress-ion c iflix'ider gear letiveen the printingoperations.

8. In a rotary multicolor printing press, an impression cylinder, its gear, a plurality of plate cylinders and their `gears, the teeth of the impression cylinder geur decreasing in thickness along; the impression .surface of the cylinder and increasing in thickness beyond said iini'iressiou surface i'or IranslerriiipV the control of `:ich plate cylinder from the imp sion cylinder gear to the said iini'iression surface during' the printingl operation and bacito the impression cylinder gear after the printing! operation.

fl. lu a rotary multicolor printinginria-t, an impression cylinder, its gear, a plurality of plate cylinders and their Igears, the teeth ol2 ihe imi'nessiou cylinder gear gradually decreasing' in thiclr' es aiongithe impr ion surface of the eyln r and rapidly increasing'in thiclrnef-s beyond said impression surface for transi'erriiu; the comi-ol oteaeh plate cylinder from the in'ipreesion cylinder gear the said impression surface dui-inn he printing operation and back to the impression cylinder gear after the printing operation.

i0. ln'a rotary multicolor i'irinting press, an impression cylinder haring a plurality of impression sui-hires. ils oeai, a plurality ot plate cylinders and their aix-: the teeth oi the impression cylinder cui' decreasing tl iclmess along the impression suil'aces lll Sli

l ld

and increasing in thickness between said impression surl'aces for transferring the control of each plate cylinder from the impression cylinder gear to the said impression surfaces during the printing operations and back to the impression cylinder gear between the printing ope lations.

l1. ln a rotary multicolor printing press, an impression cylinder having a plurality of impression surfaces, its gear, a plurality of plate cylinders and their gears, the teeth .of the impression cylinder gear gradually decreasingin thickness along `the impression surfaces and rapidly increasing in thickness between said impression surfaces for transl'erring the control of each plate cylinder from the impression cylinder gear to the .said impression surfaces during the printing operations and back to the impression cylinder gear between the printing operations.

l2. 1n a rotary printing press, an impression cylinder, its gear, a plate cylinder, its gear.I a: gear for positively driving the impression cylinder gear, the backs of the impression cylindergear'teelh being successively out away to an increasing extent alongthe impression surface of the cylinder and to a decreasing extent beyond the impression surface for transferring the control ot the plate cylinder from the impression cylinderl gear to the said impression surface during the printing operation and back t the impression cylinder gear after the printing operation without intelr'ering with the driving connection between the impression cylinder gear and its driving gear.

13. In a rot-ary printing press, an iinpres sion cylinder, its gear, a plate cylinder, its gear, a gear ior positively driving the impression cylinder gear, the backs of the impression cylinder gear teeth being successively cut away gradually to an increasing extent along1 the impression surface of the cylinder and rapidly to a decreasing extent beyond the impression surface for trans-- ierring the cont-rol of the plate cylinder from 'the impression cylinder gear to the said impression surface during theprinting operation and back to the impression cylinder gear aft-er the printing operation without interfering with the driving connection between thein'ipression cylinder gear and its driving gear.

.Tn testimony, that I claim the foregoing as my invention, I have signed my name in presence of two witnesses, this seventh day of October, A. D. 1912.

RICHARD J. GREENVAY, JR.

lVitnesses A. R. S'rrLLMAN, A. C. WurrroRD. 

